netvox RA0711 Wireless Liquid Level Sensor User Manual

netvox RA0711 Wireless Liquid Level Sensor

Introduction

RA0711_R72611_RA0711Y is a Class A type device based on the LoRaWAN open protocol. RA0711_R72611_RA0711Y can be connected to the liquid level sensor and report the value collected by the sensor to the corresponding gateway.

LoRa Wireless Technology:
Lora is a wireless communication technology dedicated to long-distance and low power consumption. Compared with other communication methods, the LoRa spread spectrum modulation method greatly increases to expand the communication distance. Widely used in long-distance, low-data wireless communications. Examples, automatic meter reading, building automation equipment, wireless security systems, and industrial monitoring. Main features include small size, low power consumption, transmission distance, anti-interference ability, and so on.

LoRaWAN:
LoRaWAN uses LoRa technology to define end-to-end standard specifications to ensure interoperability between devices and gateways from different manufacturers.

Appearance

Main Features

• Compatible with LoRaWAN
• RA0711 & RA0711Y apply DC 12V adapter
• R72611 applies solar and rechargeable lithium batteries
• Simple operation and setting
• Liquid Level detection
• Adopt SX1276 wireless communication module

Set up Instruction

On/Off

Power on

| RA0711 and RA0711Y are connected to the DC 12V adapter for power-on;

R72611 applies solar and rechargeable lithium batteries.

---|---
Turn on| Power on to turn on.
Restore to factory setting| Press and hold the function key for 5 seconds till green indicator flashes for 20 times.
Power off| Remove power

Note:

| 1.     Engineering test modes require the burning engineering test software.

2.   On/off interval is suggested to be about 10 seconds to avoid the interference of capacitor inductance and other energy storage components.

Network Joining

Never joined the network (Or at factory setting )

| Turn on the device to search the network to join. The green indicator stays on for 5 seconds: success

The green indicator remains off: fail

Had joined the network (Not at factory setting.)

| Turn on the device to search the previous network to join. The green indicator stays on for 5 seconds: success

The green indicator remains off: fail

Fail to join the network

(when the device is on)

| Suggest to check the device verification information on the gateway or consult your platform server

provider.

Function Key

Press and hold for 5 seconds

| Restore to factory setting / Turn off

The green indicator flashes for 20 times: success The green indicator remains off: fail

Press once

| The device is in the network: the green indicator flashes once and the device sends a data report

The device is not in the network: green indicator remains off

RA0711_R72611_RA0711Y has a network information memory function saving function when power-down. This function is turned off by default, that is, it will be re-joined every time it is powered back on. This function can be turned on by the ResumeNetOnOff command. At this time, each time the power is rewritten, the last network joining information will be recorded (including saving the network address information assigned to it, etc., if you want to join a new network, you need to perform a factory resetting operation first.)It will not be re-joined in the previous network.

Data Report

The device will immediately send a version packet report along with an uplink packet including liquid level and voltage values. The device sends data in the default configuration before any configuration is done.
Default setting:

Report Maxime: RA0711_ RA0711Y is 180s
RA72611 is the 1800s Value must be greater than ReportMinTime≧ReportType count
ReportMinTime + 10 , unit: second
Report MinTime: 30s ( US915, AU915, KR920, AS923, IN865 ) 120s ( EU868 )
ReportType count: 1
If RA07 / R726 series device ReportType Count >1,

For example, when ReportType Count=2, two data packets will be sent every periodic report, and the sending interval of the two data packets will be ReportMinTime. When RA0711 ReportType Count = 1, MinTime configuration is invalid.

Note:

1. The device report interval will be programmed base on the default firmware which may vary.
2. The interval between two reports must be the Maxime
3. ReportChange is not supported by RA0711_R72611_RA0711Y (Invalid configuration)
4. Report cycle will be based on the ReportMaxTime period when sending data packet (beginning to the end of the first data as a period).
5. Data packet: liquid level value
6. It would take about 35 seconds for the liquid level sensor to sample and process the collected liquid level value after being powered
7. The device also supports Cayenne’s TxPeriod cycle configuration instructions. Therefore, the device can also perform a report according to the cycle time of the TxPeriod value; and whether the reporting period is ReportMaxTime or TxPeriod will be depending on which cycle time is configured last time;
8. It would take about 35 seconds for the liquid level sensor to sample and process the collected liquid level value if you were to manually trigger the device by pressing the button, please be patient.

The device reported data parsing please refer to the Netvox LoraWAN Application Command document and Netvox Lora Command Resolver http://loraresolver.netvoxcloud.com:8888/page/index

Example of ConfigureCmd

FPort：0x07

• CmdID – 1 byte
• DeviceType – 1 byte – Device
• Type of Device NetvoxPayLoadData – var bytes (Max=9bytes)

Description

|

Device

|

CmdID

|

DeviceType

|

NetvoxPayLoadData

---|---|---|---|---
Config

ReportReq

|

RA07 Series R726 Series RA07xxY Series

|

0x01

|

0x05

0x09

0x0D

| MinTime

(2bytes Unit:s)

| MaxTime

(2bytes Unit:s)

| Reserved

(5Bytes,Fixed 0x00)

Config

ReportRsp

|

0x81

| Status

(0x00_success)

| Reserved

(8Bytes,Fixed 0x00)

ReadConfig

ReportReq

|

0x02

| Reserved

(9Bytes,Fixed 0x00)

ReadConfig

ReportRsp

|

0x82

| MinTime

(2bytes Unit:s)

| MaxTime

(2bytes Unit:s)

| Reserved

(5Bytes,Fixed 0x00)

Configure RA0711 device parameters MinTime = 30 s, MaxTime = 240 s ( 240 > 30*1+10)
Note:

1. The ReportMaxTime should be greater than (ReportType count *ReportMinTime+10; Unit: seconds).
2. The report data of RA0711 is the level value. ReportType count = 1; The MinTime configuration is useless. Therefore, please configure the MinTime to 30s. (The MinTime of EU868 cannot be less than 120s.)

• Downlink : 0105001E00780000000000
• Device returns: 8105000000000000000000 (configuration successful) 8105010000000000000000 (configuration failed)

Read RA0711 device parameters

Downlink: 0205000000000000000000
Device returns: 8205001E00780000000000 (device current parameter)

Installation

Installation Steps And Precautions

1. The RA0711 is fixed with screws (purchased by users) to secure the unit to the surface of a wall or other object.
   Note: Do not install the device in a metal enclosure or other electrical equipment around it to avoid affecting the wireless transmission of the device .

2. The R72611 product is waterproof. After the network joining is completed, please leave it outdoors.

3. In the position to be installed, loosen the U-shaped screw of the bottom of the R72611 and the mating washer nut, and fix the U-shaped screw through the appropriate size cylinder on the R72611 fixed strut piece. Install the washer nut in order, lock the nut till R72611 body is stable and does not shake.

4. At the upper side of the fixed position of R72611, loosen the two U-shaped screws on the side of the solar panel and the mating washer nut.
   Fix the U-shaped screw through the appropriate size cylinder on the main bracket of the solar panel, and install the gasket in sequence. Lock nut till the solar panel is stable and does not shake.

5. Adjust the angle of the solar panel. After the adjustment is completed, lock the nut.

6. Connect the R72611 top waterproof cable to the solar panel wiring and lock it tight.

7. R72611 has a battery pack inside, users can buy and install a rechargeable 18650 lithium battery, a total of 3 sections, a single rechargeable lithium battery voltage 3.7V, capacity recommended 3000mah ~ 5000mah, the installation of rechargeable lithium battery steps are as follows:
   a. Remove the four screws around the battery cover
   b. Insert three 18650 lithium batteries. (Please make sure the battery is positive and negative)
   c. Press the activation button on the battery pack for the first time.
   d. After activation, close the battery cover and lock the screws around the battery cover.

8. The RA0711Y product is waterproof and can be placed outdoors after the network joining is completed.

9. In the position to be installed, loosen the bottom U-shaped screw of the RA0711Y and the mating washer nut, and fix the U- shaped screw through the appropriate size cylinder on the RA0711Y fixed strut piece. Install the washer nut in order, and lock the nut till RA0711Y body is stable and does not shake.

10. Loosen the M5 nut at the bottom of the RA0711Y matte and take the matte together with the screw.

11. Plug the DC adaptor from the center through-hole of the RA0711Y bottom cover, insert it into the RA0711Y DC socket, and then return the mating screw to the original position and lock the M5 nut tight.

Liquid Level Transmitter Installation Precautions

1.  The liquid level transmitter can be installed vertically or tilted or leveled in the tank or tank, but care should be taken to prevent sediment or other impurities from entering the transmitter probe and affecting the measurement.
2. Avoid using the air guide cable to be too tight or bent when in use. In addition to being used as a power source and signal transmission, the air-conducting cable also plays a key role in atmospheric compensation, and bending will affect the measurement results.
3. If you use an environment that is highly fluctuating with the media, take care to fix the transmitter probe section. To prevent the sway of the transmitter from affecting the measurement, a steel pipe or a PVC pipe larger than the diameter of the transmitter can be inserted. In the opposite heights of the water flow direction, a plurality of small holes having a diameter larger than 5 mm are opened to allow water to enter the pipe. As shown below.

Installation Reference

Cable hanger installation & Cable fixing flange installation 

Liquid Level Transmitter Use Precautions

1. The level transmitter is made of stainless steel and is not allowed to be used in media that are not compatible with stainless steel.
2. Before the liquid level transmitter is powered on, ensure that the power supply voltage meets the power supply requirements of the liquid level transmitter, the positive and negative terminals are connected correctly, and the highest liquid level is within the range of the liquid level transmitter.
3. When using, try to avoid the water level transmitter cable terminal immersing in water, the water will damage the liquid level transmitter.
4. When using, try to avoid sharp objects damage to the liquid level transmitter. Damage will cause the water inlet to damage the liquid level transmitter.
5. The liquid level transmitter is a precision instrument and is not allowed to be disassembled to avoid damage.
6. Place it in a dry and ventilated environment when it is not in use.
7. Keep the air duct and wiring place dry and ventilated when it is put in water. The service life is 3-8 years.

Usage Scenarios

• Water tank
• Pool
• River water level measurement
• When it is necessary to detect the water level.

Important Maintenance Instruction

Your device is a product of superior design and craftsmanship and should be used with care. The following suggestions will help you use the warranty service effectively.

• Keep the equipment dry. Rain, moisture, and various liquids or moisture may contain minerals that can corrode electronic circuits. In case the device is wet, please dry it completely.
• Do not use or store in dusty or dirty areas. This can damage its detachable parts and electronic components.
• Do not store in excessive heat. High temperatures can shorten the life of electronic devices, destroy batteries, and deform or melt some plastic parts.
• Do not store in an excessive cold place. Otherwise, when the temperature rises to normal temperature,moisture will form inside, which will destroy the board.
• Do not throw, knock or shake the device. Rough handling of equipment can destroy internal circuit boards and delicate structures.
• Do not wash with strong chemicals, detergents or strong detergents.
• Do not apply with paint. Smudges can block debris in detachable parts and affect normal operation.
• Do not throw the battery into a fire to prevent the battery from exploding. Damaged batteries may also explode.

All of the above suggestions apply equally to your device, battery and accessories. If any device is not working properly. Please take it to the nearest authorized service facility for repair.

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